transmittion not shifting into overdrive - Page 4 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 11-12-2009, 10:21 PM   #31
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Well I did the tcc test the rpm goes up about 300-400 rpm and as soon as I take my foot off the brake pedal the rpm drops down again. What does this mean. I had a 89 Bonnie when it went into lockup the rpm dropped down to 1800 rpm . our car that we are driving now runs at 2400 at 60 mph.
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Old 11-12-2009, 10:28 PM   #32
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It appears that lockup is working. Is it going into 4th gear?
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Old 11-12-2009, 10:47 PM   #33
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It appears that lockup is working. Is it going into 4th gear?
X 2. Your torque convertor is going into lockup as it should. Now let'* find out if you are getting into overdrive. Driving at a steady 60 miles an hour, check to see if the torque convertor is locked up (you know how to do that now) then drop the gear selector down into 3rd gear. If the revs go up, you were in overdrive. If they stay the same, overdrive is not working.

Let us know what you find out.
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Old 11-12-2009, 11:01 PM   #34
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Our car shifts 3 times then the rpm drops a little more. But the rpm is still at 2400 at 60 mph
is the SSE higher reved than SE or LE * . Thanks so much for the help that you are giving me I seem to ask the same questions several times.
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Old 11-12-2009, 11:05 PM   #35
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I only seem to have od on shift quadrant if i drop down to3d, 2nd or 1st it still doesnt shift down
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Old 11-12-2009, 11:06 PM   #36
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may be the shift cable needs adjusting.
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Old 11-13-2009, 09:08 AM   #37
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I checked on the way into work today, and my 2001 SSEi runs around 1,700 rpm at 60 mph. If I drop it into 3rd it runs at 2,200 rpm.
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Old 11-25-2009, 10:50 PM   #38
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Hi in Bonnei land. I stopped at the local automatic trans shop. He is a good friend and I told him about
what the tranny is doing. He went out to the car and checked the oil in the tranny and said it was very good then checked the tv cable adjustment with the throttle . I had thought I had adjusted the tv cable but I adjusted it wrong It was too tight also to tight when the previeous owner had the car. Me friend adjusted the tv cable 2 times and told me to try it. Well as soon as I got on the hiway I couldn't even tell
when the tranny shifted SMOOTH AS SILK It shifts perfect and goes to 1800 rpm at 60 mph
HNLALULIA good good good..Thanks for everyones help duncan
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Old 11-26-2009, 09:36 AM   #39
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I'm glad that your problem is taken care of.
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Old 12-30-2009, 09:39 PM   #40
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The car works very well after the tv cable was adjusted properly. even in the -40 % weather.
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3.8. l67, 3800, bonneville, bonnie, lockup, ponitiac, se, sle, sse, ssei, tcc, trans issues, transmission

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